Version :Of high quality gauge steel, hardened (60 ± 2 HRC) and tempered. The test pin sets are arranged in a wooden case for ease of location, with labelled holes (from 1.5 mm ⌀ the pins are also directly marked). Test pin length 40 mm up to ⌀ 0.99 mm, 70 mm above that. Tolerance class 2: Pin ⌀ ± 0.002 mm.

Application :For work on jig boring machines or in jig and tool making, e. g. for measuring bore tolerances, for checking positions of bores, checking the spacing tolerances of two bores, gearwheel or thread dimensions as well as for angle and profile inspections etc.